Coding and coverage · ICD-10-CM

N05 Unspecified nephritic syndrome

Not billable (header)Chapter 14

Report one of the more specific codes below.

Check coverage with this diagnosis

Codes under this one

  • N05.0 Unspecified nephritic syndrome with minor glomerular abnormality
  • N05.1 Unspecified nephritic syndrome with focal and segmental glomerular lesions
  • N05.2 Unspecified nephritic syndrome with diffuse membranous glomerulonephritis
  • N05.3 Unspecified nephritic syndrome with diffuse mesangial proliferative glomerulonephritis
  • N05.4 Unspecified nephritic syndrome with diffuse endocapillary proliferative glomerulonephritis
  • N05.5 Unspecified nephritic syndrome with diffuse mesangiocapillary glomerulonephritis
  • N05.6 Unspecified nephritic syndrome with dense deposit disease
  • N05.7 Unspecified nephritic syndrome with diffuse crescentic glomerulonephritis
  • N05.8 Unspecified nephritic syndrome with other morphologic changes
  • N05.9 Unspecified nephritic syndrome with unspecified morphologic changes
  • N05.A Unspecified nephritic syndrome with C3 glomerulonephritis

Instructional notes

Chapter 14

Excludes2Not included here: the patient may have both; report both when both are present.
  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)

Section N00-N08

Excludes1Not coded here: never report with this code, except when the two conditions are unrelated.
  • hypertensive chronic kidney disease (I12.-)
Code also
  • any associated kidney failure (N17-N19).

This code

Excludes1Not coded here: never report with this code, except when the two conditions are unrelated.
  • nephropathy NOS with no stated morphological lesion (N28.9)
  • renal disease NOS with no stated morphological lesion (N28.9)
  • tubulo-interstitial nephritis NOS (N12)
Includes
  • glomerular disease NOS
  • glomerulonephritis NOS
  • nephritis NOS
  • nephropathy NOS and renal disease NOS with morphological lesion specified in .0-.8

Chapter 14: Diseases of the genitourinary system · N00-N08 Glomerular diseases (N00-N08)

Source: ICD-10-CM FY 2027 code descriptions and tabular list (CMS and CDC National Center for Health Statistics), effective 2026-10-01 through 2027-09-30 · CMS ICD-10 files. HCC mapping: CMS-HCC V28, payment year 2027. As of 2026-11-04.

Coverage and payment depend on the claim details; confirm with the Medicare Administrative Contractor.